All the Cinque Terre towns have their own train station. Almost all the trains from La Spezia stop in Levanto. Check your train schedule carefully-some trains that stop in La Spezia, also stop in Levanto, so you do not need to change in La Spezia.
PAR is an acronym for parabolic aluminized reflector. A PAR lamp, which may utilize either an incandescent filament, a halogen filament tube or a HID arc tube, is a precision pressed-glass reflector lamp. PAR lamps rely on both the internal reflector and prisms in the lens for control of the light beam.
The Parseval's equation indicates that the energy or information contained in the signal is reserved, i.e., the signal is represented equivalently in either the time or frequency domain with no energy gained or lost. that is, the auto-correlation and the energy density function of a signal are a Fourier transform pair.